EP2949873A1 - Turbomachine avec blindage à l'ingestion et utilisation de la turbomachine - Google Patents

Turbomachine avec blindage à l'ingestion et utilisation de la turbomachine Download PDF

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Publication number
EP2949873A1
EP2949873A1 EP14170011.2A EP14170011A EP2949873A1 EP 2949873 A1 EP2949873 A1 EP 2949873A1 EP 14170011 A EP14170011 A EP 14170011A EP 2949873 A1 EP2949873 A1 EP 2949873A1
Authority
EP
European Patent Office
Prior art keywords
working fluid
rotor
turbomachine
stator
heat shield
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14170011.2A
Other languages
German (de)
English (en)
Inventor
Per Granberg
Janos Szijarto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP14170011.2A priority Critical patent/EP2949873A1/fr
Priority to US15/312,911 priority patent/US10337344B2/en
Priority to PCT/EP2015/060187 priority patent/WO2015180946A1/fr
Priority to EP15722518.6A priority patent/EP3129602B1/fr
Priority to CN201580027284.6A priority patent/CN106414908B/zh
Priority to CA2950334A priority patent/CA2950334C/fr
Publication of EP2949873A1 publication Critical patent/EP2949873A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/001—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between stator blade and rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/007—Preventing corrosion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/08—Heating, heat-insulating or cooling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/10—Stators
    • F05D2240/15—Heat shield
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/17—Alloys
    • F05D2300/171—Steel alloys

Definitions

  • the present invention refers to a turbomachine with an ingestion heat shield and a use of the turbomachine.
  • a turbomachine for instance a gas turbine or a steam turbine, is used for power generation.
  • Such a turbomachine comprises a stator with at least one stator component and a rotor with at least one rotor component.
  • Rotor components of the rotor are an axial shaft and a plurality of rotor blades.
  • the rotor blades are arranged annularly around the axial shaft.
  • Stator components are a stator ring and a plurality of guide vanes for guiding working fluid of the turbomachine (hot gas in case of a gas turbine and superheated steam in case of a steam turbine).
  • the stator ring and the rotor shaft are coaxially arranged to each other.
  • the guide vanes are arranged annularly around the stator ring.
  • the guide vanes assist in guiding the working fluid for the impingement of the working fluid on the rotor blades of the rotor.
  • the working fluid is lead through a working fluid channel of the turbomachine.
  • the working fluid channel is bordered by at least one of the stator components and by at least one of the rotor components. Due to very high temperatures of the working fluid the bordering stator component and/or the bordering rotor component are highly stressed.
  • turbomachine with a working fluid channel for leading the working fluid to blades of the rotor.
  • the turbomachine should be robust such that a degradation of the stator component doesn't take place while leading hot working fluid trough the working fluid channel.
  • a further object of the invention is the use of the turbomachine.
  • a turbomachine which comprises a stator with at least one stator component, a rotor with at least one rotor component and at least one working fluid channel for channeling a working fluid for driving the rotor, wherein the working fluid channel is bordered by the stator component and the rotor component.
  • the turbomachine is characterized in that at least one heat shield is located in the working fluid channel for protecting the stator component from an erosive attack of the working fluid.
  • This turbomachine is used for producing electricity by leading the working fluid to rotor blades of the rotor through the working fluid channel.
  • the rotor is coupled to at least one generator.
  • the working fluid channel is an ingestion channel for impingement of the working fluid on rotor blades of the rotor.
  • the heat shield is an ingestion shield.
  • the working fluid is hot gas of a gas turbine or superheated steam of a steam turbine.
  • the hot gas of the gas turbine comprises exhaust gases of a burning process (oxidation of a fuel).
  • a temperature of the hot gas reaches temperatures of more than 1000 °C.
  • the heat shield comprises at least one consumable.
  • the consumable is cheap and easily available.
  • the consumable comprises a metal alloy.
  • the metal alloy is a low grade alloy such as stainless steel. Stainless steel is easily available and relatively cheap
  • the heat shield comprises a thickness which is selected from the range between 0.5 mm and 5.0 mm, preferably selected from the range between 1.0 mm and 3.0 mm and more preferably selected from the range between 1.5 mm and 2.5 mm. For instance, the thickness is about 2.0 mm. Such thicknesses are enough in order to fulfill the function as heat shield for a longer period.
  • the heat shield can be exchanged during routinely
  • the stator component which borders the working fluid channel can be any part of the stator.
  • the stator component is a stator ring of the stator.
  • the stator ring borders the working fluid channel and is protected by the heat shield so that working fluid can't easily attack the stator ring.
  • the heat shield is preferably directly assembled to the stator component. Stator component and heat shield are directly connected to each other. For instance, the heat shield is welded to the stator ring. Concerning a preferred embodiment, the heat shield is mechanically fixed between the stator ring and a guide vane of the turbomachine. The heat shield is located between the guide vane and the stator ring and is fixed only geometrically by a clamping mechanism. The heat shield is clamped between the stator ring and the guide vane. By this, an accommodation of different thermal expansions of the different components is reached.
  • the heat shield comprises a heat shield ring.
  • the heat shield is an annular heat shield. This heat shield can be one piece which is not subdivided. Alternatively, the annular heat shield is subdivided.
  • the heat shield ring is a segmented ring or a split ring. By the segmentation of the ring or the split of the ring an additional degree of freedom is reached. This is advantageous in order to reduce thermal stress of the complete assembly.
  • the turbomachine is a gas turbine.
  • the turbomachine 1 comprises a stator 11 with at least one stator component 111.
  • the stator component is an annular stator ring.
  • the turbomachine comprises additionally a rotor 12 with at least one rotor component 121.
  • the rotor component 121 comprises an axial rotor shaft on which rotor blades are arranged for driving the rotor shaft.
  • the rotor shaft and the stator ring are coaxially arranged to each other.
  • At least one working fluid channel 13 for channeling working fluid 131 (hot exhaust gas of a combustion process) to the rotor blades is arranged between the stator ring 1111 and the rotor shaft. Through the working fluid channel 13 working fluid 131 can be led to the rotor blades for driving the rotor 12.
  • the working fluid channel 13 is bordered by the stator component 111 (stator ring 1111) and the rotor component 121 (rotor shaft).
  • the working fluid channel 13 is an ingestion channel for impingement of the working fluid 131 on the rotor blades of the rotor 12.
  • a least one heat shield 14 (ingestion shield) is located in the working fluid channel 13 for protecting the stator ring 1111 from an erosive attack of the working fluid 131.
  • the heat shield is a heat shield ring 141 with a circumference which is similar to the circumference of the stator ring 1111. Hot working fluid 131 can't directly attack the stator ring 1111.
  • the heat shield ring 141 has the function of an ingestion shield.
  • the heat shield 14 is a consumable. It is mad out of a low grade alloy. In this specific embodiment the low grade alloy is X22CrMoV12-1. The thickness if the heat shield 14 is about 2.0 mm.
  • the heat shield 14 is assembled between the stator ring 1111 and guide vanes 1112 (made of poly crystalline IN792) of the turbomachine.
  • the heat shield 14 mechanically fixed between the stator ring 1111 and guide vanes 1112.
  • the heat shield 14 is clamped by the stator ring 1111 and the guide vanes 1112. By this, the heat shield is axially locked.
  • the heat shield ring 141 is a non segmented heat shield ring.
  • the heat shield ring 141 is formed in one piece.
  • the heat is shield ring 141 is a segmented ring or a split ring.
  • This turbomachine is used for producing electricity by leading the working fluid 131 to the rotor blades of the rotor 12 through the working fluid channel 13.
  • the rotor 12 is coupled to a generator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP14170011.2A 2014-05-27 2014-05-27 Turbomachine avec blindage à l'ingestion et utilisation de la turbomachine Withdrawn EP2949873A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP14170011.2A EP2949873A1 (fr) 2014-05-27 2014-05-27 Turbomachine avec blindage à l'ingestion et utilisation de la turbomachine
US15/312,911 US10337344B2 (en) 2014-05-27 2015-05-08 Turbomachine with an ingestion shield and use of the turbomachine
PCT/EP2015/060187 WO2015180946A1 (fr) 2014-05-27 2015-05-08 Turbomachine à écran d'ingestion et utilisation de la turbomachine
EP15722518.6A EP3129602B1 (fr) 2014-05-27 2015-05-08 Turbomachine avec blindage à l'ingestion et utilisation de la turbomachine
CN201580027284.6A CN106414908B (zh) 2014-05-27 2015-05-08 具有摄热屏障的涡轮机及其用途
CA2950334A CA2950334C (fr) 2014-05-27 2015-05-08 Turbomachine a ecran d'ingestion et utilisation de la turbomachine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14170011.2A EP2949873A1 (fr) 2014-05-27 2014-05-27 Turbomachine avec blindage à l'ingestion et utilisation de la turbomachine

Publications (1)

Publication Number Publication Date
EP2949873A1 true EP2949873A1 (fr) 2015-12-02

Family

ID=50846794

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14170011.2A Withdrawn EP2949873A1 (fr) 2014-05-27 2014-05-27 Turbomachine avec blindage à l'ingestion et utilisation de la turbomachine
EP15722518.6A Active EP3129602B1 (fr) 2014-05-27 2015-05-08 Turbomachine avec blindage à l'ingestion et utilisation de la turbomachine

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15722518.6A Active EP3129602B1 (fr) 2014-05-27 2015-05-08 Turbomachine avec blindage à l'ingestion et utilisation de la turbomachine

Country Status (5)

Country Link
US (1) US10337344B2 (fr)
EP (2) EP2949873A1 (fr)
CN (1) CN106414908B (fr)
CA (1) CA2950334C (fr)
WO (1) WO2015180946A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201700535D0 (en) * 2017-01-12 2017-03-01 Rolls Royce Plc Thermal shielding in a gas turbine
EP3421727B1 (fr) * 2017-06-30 2020-01-29 Ansaldo Energia Switzerland AG Turbine à gaz équipée d'un support d'aubes de turbine
US11459903B1 (en) 2021-06-10 2022-10-04 Solar Turbines Incorporated Redirecting stator flow discourager

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429478A (en) * 1994-03-31 1995-07-04 United Technologies Corporation Airfoil having a seal and an integral heat shield
EP0770761A1 (fr) * 1995-10-23 1997-05-02 United Technologies Corporation Virole entourant un rotor d'une turbomachine
US20050118016A1 (en) * 2001-12-11 2005-06-02 Arkadi Fokine Gas turbine arrangement
EP2236768A2 (fr) * 2009-03-12 2010-10-06 General Electric Company Ensemble de joints de turbomachine
EP2634373A1 (fr) * 2012-02-28 2013-09-04 Siemens Aktiengesellschaft Agencement pour turbomachine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356340A (en) * 1965-03-15 1967-12-05 Gen Electric Turbine rotor constructions
US3647311A (en) 1970-04-23 1972-03-07 Westinghouse Electric Corp Turbine interstage seal assembly
DE19919654A1 (de) * 1999-04-29 2000-11-02 Abb Alstom Power Ch Ag Hitzeschild für eine Gasturbine
JP4016845B2 (ja) 2003-02-05 2007-12-05 株式会社Ｉｈｉ ガスタービンエンジン
WO2008128876A1 (fr) * 2007-04-19 2008-10-30 Alstom Technology Ltd Écran thermique de stator
US8277172B2 (en) 2009-03-23 2012-10-02 General Electric Company Apparatus for turbine engine cooling air management
US9528382B2 (en) * 2009-11-10 2016-12-27 General Electric Company Airfoil heat shield
WO2014105780A1 (fr) * 2012-12-29 2014-07-03 United Technologies Corporation Ensemble et support de joint de turbine à gaz à usages multiples
EP2938837B1 (fr) * 2012-12-29 2018-06-27 United Technologies Corporation Ensemble de joint d'étanchéité de turbine à gaz et support de joint d'étanchéité

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429478A (en) * 1994-03-31 1995-07-04 United Technologies Corporation Airfoil having a seal and an integral heat shield
EP0770761A1 (fr) * 1995-10-23 1997-05-02 United Technologies Corporation Virole entourant un rotor d'une turbomachine
US20050118016A1 (en) * 2001-12-11 2005-06-02 Arkadi Fokine Gas turbine arrangement
EP2236768A2 (fr) * 2009-03-12 2010-10-06 General Electric Company Ensemble de joints de turbomachine
EP2634373A1 (fr) * 2012-02-28 2013-09-04 Siemens Aktiengesellschaft Agencement pour turbomachine

Also Published As

Publication number Publication date
EP3129602A1 (fr) 2017-02-15
US10337344B2 (en) 2019-07-02
US20170159468A1 (en) 2017-06-08
CA2950334C (fr) 2018-12-04
CN106414908B (zh) 2018-10-16
CA2950334A1 (fr) 2015-12-03
WO2015180946A1 (fr) 2015-12-03
EP3129602B1 (fr) 2018-06-27
CN106414908A (zh) 2017-02-15

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